Cooling-vane for second-class glower-lamps.



A. KUSEBAUCH. COOLING VANE FOB. SECOND GLASS GLOWEB LAMPS. APPLICATIONFILED NOV. 11, 1908.

977,198. Patefited Nov. 29, 1910.

' Pittsbur v vention will be specifically-described here- UNITED STATESPAT NroFmoE.

I ANTON KUSEBAUCH, OF PITTSBURG, PENNSYLVANIA, #SSIGNOR, IBY'MESNE-ASSIGN- MENTS, NEBNS'I LAMP COMPANY, CORPORATION OF PENNSYLVANIA.

COOLING-VANE FOB SECOND-CLASS GIOWEB-IJAHPS. I

- specification ctletten ratentg I Patented Nov. 29, 1910.

Application and November, 11, mos. 8eria1 Rp.482,122.

To all whom it may concern:

Be it known that I, ANTON KUSEBAUCH, a citizen of the United States,residing in in the county of Allegheny and State of ennsylvania havemadea new and useful Invention in dooling-Vanes for Seeond-GlassGlower-Lamps, of which the following is a specification.

ThIS invention relates to incandescent lamps in which the filaments ofsecond-class conductors.

One object of this invention is to produce a lamp of the class describedof improved and compact design which will more perfectly fulfil thepurpose for which it is intended than those now generally in use.

Other objects and advantages of this inlnafter, it being understood thatchan es in form, proportion and minor details 0 construction may beresorted to without departin from the spirit of the invention.

In t e drawings accompanying th1s application and forming a partthereof! Figure 1 is a sectional elevation of a lamp embodyin myinvention; Fig. 2 is a'section along tie line A A of Fig. 1 andillustrates a cooling device which forms a detail of my invention; Fig.3 is a perspective view of a cooling vane employed in my invention; andFig. 4 is an elevation of a modification of my invention.

In the lamp illustrated, I have embodied improvements which constitutemy inven-' tion and which I believe perfect the operation of the lamp.

The cooling and ventilating system employed is an improvement and itsuse eliminates certain serious difficulties which have been previouslyencountered. In previous lamps a heavy overshoot of current passedthrough the glower directly after the glower was thrown into action bythe automatic cutting out of the heater. This overshoot currentsometimes reached a point far beyond the normal operating capacity ofthe lamp and resulted from the fact that the ballast contained heatabsorbing material and furthermore that the heat radiated by the ballastwas not sufficiently taken care of. These conditionsreacted on theballast char-- are composed temperatures of the lamp were eventually.

reac ed. A current of 150 or 160 per cent. of the normal operatingcurrent of the lamp was forced through the glowers immediately afterthey were started. With this current flowin through the glower, even fora very limited period, it is evident that it was strained considerably,in fact was strained a greater amount than if the had been operated at ahigher efliciency wiih the starting overshoot removed. The air coolingdevice as illustrated in the drawings overcomes these objectionablefeatures and reduces the overshoot, (the abnormal current flowingthrough the glowers at the period of starting) to have accomplished thisby radiating surface of the ballast and so constructing a ventilatingsystem that the energy dissipated in the ballast wire and carried off inthe form of heat is quickly radiated and convected to the surroundingair.

Referring to the drawings: The lampincludes a porcelain 5 on which aterminal plug 6 of the lamp socket porcelain 7, in which a screw'base 8is secured, a ballast tube 9 which is located between the top and bottomporcelains, and

a cut out device 10 which is mounted on the,

top porcelain. These elements together with a number of separatelyformed bronze cooling vanes 11 are inclosed within a shell or casing 12.The mounting terminal 6 is secured to the porcelain 5 and consists of acylindrical shell 13 fit a mounting socket and a circular terminal 14which is surrounded by the cylindrical shell and is insulated therefrom.

A glower 15 and a heater 16 are' mounted on the screw base 8. This baseis provided with ascrew plug 17, which is adapted to be screwed into 'asocket provided on the porcelain 7. Three separate terminals areprovided on the screw base, one for the glower, one for the heater, andone common to the glower and the heater. Each of these terminals contactwith a correspondingly located terminal provided in the socket of theporcelain 7 and connect the glower and the heater into their respectivecircuits. The ballast tube 9 incloses a ballast wire 18 and is filledwith an inert gas. A base portion 19 is provided for the ballast tubewhich forms a mounting plug for the tube EXCESS 1 practically zero. I

provided with threads to increasing the r is mounted, a bottom or andterminals for the wire. socket 21 is secured to the porcelain 6 and isadapted to receive the base portion 19 and to electr1- cally connect itinto the glower circuit of the lamp.

The terminals 13 and 14 are ternnnalsof the lamp circuit and the lampcircu t 1ncludes a heater circuit and a glower circuit connected inparallel. The glower, the'ballast wire and the magnetic coil of the cutout device are located in the glower circuit and the heater and thearmature of the cutout device are located in the heater circuit. Afterthe glower has reached a temperature at which it is a current conductor,the magnetic coil of the cut-out device is energized and, by attractingthe armature, breaks the heater circuit and causes all of the current toflow through the glower circuit.

The cut-out device consists of a magnetic coil 22 which is included inthe glower circuit and which controls a swinging armature 23 mounted onthe support frame of the coil. 'The armature is included in the heatercircuit when the coil 22 is not energized. The cooling device consistsof a number of separately formed phosphorous bronze pieces or vanes 11which surround the ballast tube 9 and are located between i it and theshell portion 12' of the lamp.

These pieces are so shaped that they mutually hold each other in placeand by their own resilience firmly clutch the ballast tube, so that theheat is transmitted from the glass walls to the pieces by contact. Thevanes, besides presenting a large radiating surface, form passa es andwith openings 24 in the shell 12 aid in the production 'of convectioncurrents which are effective in parrying off the heat generated in thebalast.

The shell 12 is so formed that the, porcelain6 may be readily removed sothat the ballast bulb may be replaced or that other repairs may be madeto the lamp. A cover portion 26 through which the mounting and terminalplug 6 projects is provided for the shell 12 and secures the porcelain 6in place.

In differently constructed lamp bodies I have found it convenient toemploy the same shape of cooling vanes 11. I inclose these, however, ina cylindrical shell which when in place is concentric with the ballasttube and is supported on the tube by means of cooperating vanes 11. Thisconstruction is illustrated in Fig. 4. The ballast tube is secured inplace in a socket 21 and the cylinder 28, in which the vanes ll-aremounted, is slid to place on and around the ballast bulb.. The vanes 11are arranged in this cylinder precisely as they are shown in Fig. 2.

In accordance with the provisions of the patent statutes, I havedescribed the princl 1e of operatlon of my invention, together with theapparatus which I now consider to represent the best embodiment thereof,but I desire to have it understood that the apparatus shown is onlyillustrative and that the invention can be means.

What I claim is:

1. In combination with a ballast tube, of a lamp the filaments of whichare com osed of second class conductors, a cylin rical shell locatedconcentrically with said tube and resilient vanes located within saidshell and held by their resilience in contact with said tube. 2. Incombination with the inclosing shell of a lamp in which the filamentsare composed of second-class conductors, a ballast tube locatedconcentric within said shell and resilient vanes located within saidshell and held by their resilience in contact with said tube.

3. In combination with the inclosing shell of a lamp in which thefilaments are composed of second class conductors, a ballast tubelocated concentricall within said shell carried out by other and aplurality of resihent vanes located 1 within said shell surrounding saidtube and held in contact therewith.

4. In combination with the inclosing shell of a lamp in which thefilaments are composed of second-class conductors, a ballast tubelocated concentrically within said shell and a plurality of radiallyextending cooling vanes located between said shell and said ballasttube.

5. In combination with the inclosing shell of the body portion of alamp, aballast tube, a plurality of separately formed resilient coolingvanes surrounding said tube and lo-

